:root {
    --anthracite: #293133;
    --hive-gold: #D6A84F;
    --strategic-teal: #008C89;
    --neural-indigo: #4B55E8;
    --architectural-white: #F4F2EA;
    --background: #171d1e;
    --card: #1f2728;
    --ink: #0f1516;
    --muted: rgba(244, 242, 234, .68);
    --line: rgba(244, 242, 234, .14);
    --line-strong: rgba(244, 242, 234, .26);
    --surface: rgba(244, 242, 234, .045);
    --surface-strong: rgba(244, 242, 234, .08);
    --container: 1240px;
    --container-gutter: clamp(1.25rem, 4vw, 2.5rem);
    --header-expanded-height: 104px;
    --header-compact-height: 76px;
    --radius: 4px;
    --font-main: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-control: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    --font-nav: var(--font-control);
    --font-display: Georgia, "Times New Roman", serif;
    --gradient-hero:
        radial-gradient(1200px 620px at 84% -12%, rgba(75, 85, 232, .18), transparent 62%),
        radial-gradient(860px 520px at 0% 92%, rgba(0, 140, 137, .18), transparent 62%);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    padding-top: var(--header-expanded-height);
    color: var(--architectural-white);
    background: var(--background);
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
}

body.is-nav-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

p,
h1,
h2,
h3 {
    margin-top: 0;
}

p {
    color: var(--muted);
}

img,
svg {
    max-width: 100%;
    height: auto;
}

::selection {
    color: var(--ink);
    background: var(--hive-gold);
}

.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 100;
    transform: translateY(-160%);
    padding: .7rem 1rem;
    color: var(--ink);
    background: var(--architectural-white);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 60;
    border-bottom: 1px solid transparent;
    background: rgba(23, 29, 30, .64);
    backdrop-filter: blur(18px);
    transition: background .25s ease, border-color .25s ease;
}

.site-header.is-scrolled {
    border-color: var(--line);
    background: rgba(23, 29, 30, .9);
}

.site-header__inner,
.site-footer__inner,
.section__inner,
.hero__inner,
.page-hero__inner {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--container-gutter);
}

.site-header__inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    min-height: var(--header-expanded-height);
    gap: 1.25rem;
    transition: min-height .25s ease;
}

.site-header.is-scrolled .site-header__inner {
    min-height: var(--header-compact-height);
}

.brand {
    display: inline-flex;
    align-items: center;
    min-width: 0;
    line-height: 0;
}

.brand__logo,
.brand__image {
    display: block;
    height: 4rem;
    transition: height .25s ease, width .25s ease, max-width .25s ease;
}

.brand__image {
    width: auto;
    max-width: clamp(13.6rem, 19.2vw, 18.4rem);
    object-fit: contain;
}

.brand__logo {
    width: clamp(13.6rem, 19.2vw, 18.4rem);
    background:
        linear-gradient(
            135deg,
            var(--brand-icon-a, var(--hive-gold)),
            var(--brand-icon-b, var(--strategic-teal)),
            var(--brand-icon-c, var(--neural-indigo)),
            var(--brand-icon-d, var(--architectural-white)),
            var(--brand-icon-a, var(--hive-gold))
        );
    background-size: 340% 340%;
    -webkit-mask: url("../images/KypseraLogo.svg") center / contain no-repeat;
    mask: url("../images/KypseraLogo.svg") center / contain no-repeat;
    filter: drop-shadow(0 12px 30px rgba(214, 168, 79, .12));
    animation: brand-icon-flow 14s ease-in-out infinite;
}

.site-header.is-scrolled .brand__logo,
.site-header.is-scrolled .brand__image {
    height: 3rem;
    max-width: clamp(10.8rem, 16vw, 14.4rem);
}

.site-header.is-scrolled .brand__logo {
    width: clamp(10.8rem, 16vw, 14.4rem);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(.5rem, 1.4vw, 1.6rem);
}

.site-nav a,
.footer-nav a,
.language-switch__link,
.header-cta,
.text-link {
    color: var(--muted);
    transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.site-nav a {
    display: inline-block;
    font-family: var(--font-nav);
    font-size: .8rem;
    font-weight: 400;
    line-height: 1;
    letter-spacing: .055em;
}

.footer-nav a,
.language-switch__link,
.header-cta,
.text-link {
    font-size: .88rem;
}

.site-nav a,
.footer-nav a,
.text-link {
    position: relative;
}

.site-nav a::after,
.footer-nav a::after,
.text-link::after {
    position: absolute;
    left: 0;
    bottom: -.25rem;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: right;
    background: currentColor;
    transition: transform .28s ease;
    content: "";
}

.site-nav a:hover,
.footer-nav a:hover,
.text-link:hover {
    color: var(--architectural-white);
}

.site-nav a:hover::after,
.footer-nav a:hover::after,
.text-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-actions {
    display: inline-flex;
    align-items: center;
    justify-self: end;
    gap: 1.35rem;
}

.header-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.45rem;
    color: var(--hive-gold);
    border: 1px solid var(--hive-gold);
    background: transparent;
    padding: .45rem .8rem;
    font-family: var(--font-control);
    font-size: .8rem;
    font-weight: 800;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: .16em;
}

.language-switch {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    min-height: 2.45rem;
    font-family: var(--font-control);
    font-size: .8rem;
    font-weight: 400;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: .16em;
}

.language-switch__link {
    display: inline-block;
    color: var(--muted);
    appearance: none;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    font: inherit;
    line-height: inherit;
    text-transform: inherit;
    letter-spacing: inherit;
    cursor: pointer;
    transition: color .2s ease;
}

.language-switch__separator {
    display: inline-block;
}

.language-switch__link:hover {
    color: var(--architectural-white);
}

.language-switch__link.is-active {
    color: var(--hive-gold);
}

.language-switch__separator {
    color: rgba(244, 242, 234, .24);
}

.header-cta:hover {
    color: var(--ink);
    border-color: var(--hive-gold);
    background: var(--hive-gold);
}

.nav-toggle {
    display: none;
    align-items: center;
    gap: .6rem;
    justify-self: end;
    color: var(--architectural-white);
    background: transparent;
    border: 1px solid var(--line);
    padding: .6rem .75rem;
    font: inherit;
}

.nav-toggle__line,
.nav-toggle__line::before,
.nav-toggle__line::after {
    display: block;
    width: 1.15rem;
    height: 2px;
    background: currentColor;
    content: "";
    transition: transform .2s ease, opacity .2s ease;
}

.nav-toggle__line {
    position: relative;
}

.nav-toggle__line::before,
.nav-toggle__line::after {
    position: absolute;
    left: 0;
}

.nav-toggle__line::before {
    top: -.38rem;
}

.nav-toggle__line::after {
    top: .38rem;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(4.75rem, 8vw, 7.5rem) 0 clamp(3.25rem, 7vw, 5rem);
    background: var(--gradient-hero);
}

.hero::after,
.section::after {
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
    content: "";
}

.hero__grid {
    position: absolute;
    inset: 0;
    opacity: .5;
    background-image:
        linear-gradient(rgba(244, 242, 234, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(244, 242, 234, .06) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at center, black 32%, transparent 78%);
}

.hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(320px, 5fr);
    gap: clamp(2.5rem, 7vw, 6.5rem);
    align-items: center;
}

.hero__content {
    position: relative;
    z-index: 1;
    min-width: 0;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    margin-bottom: 1.5rem;
    color: var(--muted);
    font-size: .72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .2em;
}

.eyebrow::before {
    width: 2rem;
    height: 1px;
    background: rgba(214, 168, 79, .7);
    content: "";
}

h1,
h2,
h3 {
    font-family: var(--font-display);
    font-weight: 400;
    letter-spacing: 0;
}

h1 {
    max-width: 9ch;
    margin-bottom: 2rem;
    font-size: clamp(4rem, 9vw, 7rem);
    line-height: .94;
}

h1 em,
h2 em {
    color: var(--hive-gold);
    font-style: italic;
}

.hero__lead {
    max-width: 620px;
    color: rgba(244, 242, 234, .78);
    font-size: clamp(1.02rem, 1.8vw, 1.2rem);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: .9rem;
    margin-top: 2.6rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .65rem;
    min-height: 3rem;
    max-width: 100%;
    padding: .9rem 1.15rem;
    color: var(--ink);
    background: var(--hive-gold);
    border: 1px solid var(--hive-gold);
    font-size: .72rem;
    font-weight: 900;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: .16em;
    text-align: center;
    transition: transform .2s ease, color .2s ease, background .2s ease, border-color .2s ease;
}

.button:hover {
    transform: translateY(-2px);
    background: var(--architectural-white);
    border-color: var(--architectural-white);
}

.button--ghost {
    color: var(--architectural-white);
    background: transparent;
    border-color: var(--line-strong);
}

.button--ghost:hover {
    color: var(--architectural-white);
    background: rgba(244, 242, 234, .08);
    border-color: var(--architectural-white);
}

.hero__visual {
    position: absolute;
    z-index: 0;
    top: clamp(.5rem, 5vw, 3rem);
    right: 0;
    width: 58vw;
    min-width: 520px;
    max-width: 760px;
    opacity: .78;
    pointer-events: none;
}

.node-grid {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 28px 80px rgba(0, 0, 0, .25));
}

.node-grid__lines line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: draw-line 1.4s ease forwards;
}

.node-grid__lines line:nth-child(2) { animation-delay: .08s; }
.node-grid__lines line:nth-child(3) { animation-delay: .16s; }
.node-grid__lines line:nth-child(4) { animation-delay: .24s; }
.node-grid__lines line:nth-child(5) { animation-delay: .32s; }
.node-grid__lines line:nth-child(6) { animation-delay: .4s; }

@keyframes draw-line {
    to { stroke-dashoffset: 0; }
}

.hero-pillars {
    position: relative;
    z-index: 1;
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    margin-top: clamp(1.5rem, 4vw, 3.5rem);
    border-top: 1px solid var(--line);
    background: var(--line);
}

.hero-pillars__item {
    min-width: 0;
    padding: clamp(1.1rem, 2.6vw, 1.8rem);
    background: var(--background);
}

.hero-pillars span,
.pillar header span,
.method-list > li > span,
.insight-card header span,
.contact-panel span {
    color: var(--hive-gold);
    font-size: .72rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .18em;
}

.hero-pillars strong {
    display: block;
    margin-top: .65rem;
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 2vw, 1.45rem);
    font-weight: 400;
}

.section {
    position: relative;
    padding: clamp(4.5rem, 8vw, 8rem) 0;
    scroll-margin-top: 84px;
}

.page-hero {
    padding: clamp(5rem, 10vw, 8rem) 0 clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--line);
    background: var(--gradient-hero);
}

.page-hero h1 {
    max-width: 13ch;
    margin-bottom: 1.35rem;
    font-size: clamp(3rem, 7vw, 5.6rem);
    line-height: .98;
}

.page-hero p:last-child {
    max-width: 720px;
    font-size: clamp(1rem, 1.8vw, 1.22rem);
}

.section--muted {
    background: rgba(244, 242, 234, .035);
}

.section-heading,
.concept-layout,
.approach-layout,
.about-layout,
.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 4.5fr) minmax(320px, 7.5fr);
    gap: clamp(2rem, 6vw, 5rem);
    align-items: start;
}

.section-heading {
    align-items: end;
    margin-bottom: clamp(2rem, 5vw, 4rem);
}

.section-heading h2,
.section-title h2 {
    margin-bottom: 0;
    max-width: 12ch;
    font-size: clamp(2.3rem, 5vw, 4rem);
    line-height: 1;
}

.section-heading p,
.section-title p,
.concept-body > p,
.about-copy p {
    font-size: clamp(1rem, 1.6vw, 1.15rem);
}

.hairline {
    width: 100%;
    height: 1px;
    margin: 2.5rem 0;
    background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.concept-pairs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.5rem, 4vw, 3rem);
}

.concept-pairs ul {
    display: grid;
    gap: .55rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
    color: rgba(244, 242, 234, .86);
}

.concept-pairs span {
    color: var(--hive-gold);
    font-size: .76rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .18em;
}

.tile-grid {
    display: grid;
    gap: 1px;
    background: var(--line);
}

.tile-grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tile-grid--articles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pillar,
.insight-card {
    display: flex;
    min-width: 0;
    min-height: 100%;
    flex-direction: column;
    gap: 1.6rem;
    padding: clamp(1.35rem, 3vw, 2.4rem);
    background: var(--background);
    transition: background .35s ease;
}

.pillar:hover,
.insight-card:hover {
    background: var(--card);
}

.pillar header,
.insight-card header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
}

.pillar header small,
.insight-card time {
    color: rgba(244, 242, 234, .5);
    font-size: .65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .18em;
}

.pillar h3,
.insight-card h3,
.method-list h3 {
    margin: 0;
    font-size: clamp(1.45rem, 2.4vw, 2rem);
    line-height: 1.15;
}

.pillar dl {
    display: grid;
    gap: .35rem;
    margin: 0;
}

.pillar dt {
    margin-top: .7rem;
    color: var(--hive-gold);
    font-size: .68rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .18em;
}

.pillar dd {
    margin: 0;
    color: rgba(244, 242, 234, .76);
}

.method-list {
    display: grid;
    gap: 1px;
    margin: 0;
    padding: 0;
    background: var(--line);
    list-style: none;
}

.method-list li {
    position: relative;
    display: grid;
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 1.2rem;
    padding: clamp(1.35rem, 3vw, 2.35rem);
    background: var(--background);
    transition: background .35s ease;
}

.method-list li:hover {
    background: var(--card);
}

.method-list p,
.insight-card p {
    margin: .85rem 0 0;
}

.about-copy {
    color: var(--muted);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin: 2.4rem 0 0;
}

.stat-grid__item {
    border-top: 1px solid var(--line);
    padding-top: 1rem;
}

.stat-grid dt {
    color: var(--hive-gold);
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    line-height: 1;
}

.stat-grid dd {
    margin: .55rem 0 0;
    color: rgba(244, 242, 234, .55);
    font-size: .68rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .18em;
}

.text-link,
.card-link {
    justify-self: end;
    color: var(--muted);
    font-size: .78rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .16em;
}

.card-link {
    margin-top: auto;
    color: var(--hive-gold);
}

.contact-section {
    overflow: hidden;
    background: var(--gradient-hero);
}

.contact-panel {
    display: grid;
    gap: 1px;
    background: var(--line);
}

.contact-panel > a,
.contact-cells > div {
    display: block;
    min-width: 0;
    padding: clamp(1.35rem, 3vw, 2rem);
    background: var(--background);
}

.contact-panel > a:hover strong {
    color: var(--hive-gold);
}

.contact-panel strong {
    display: block;
    margin-top: .7rem;
    overflow-wrap: anywhere;
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.6vw, 2rem);
    font-weight: 400;
}

.contact-cells {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
}

.blog-post {
    max-width: 840px;
}

.blog-post__content {
    color: rgba(244, 242, 234, .82);
    font-size: 1.07rem;
}

.blog-post__content h2,
.blog-post__content h3 {
    margin-top: 2rem;
    color: var(--architectural-white);
}

.blog-post__content a {
    color: var(--hive-gold);
    font-weight: 800;
}

.article-card__image {
    margin-bottom: 2rem;
    border: 1px solid var(--line);
    overflow: hidden;
}

.article-card__image img {
    display: block;
    width: 100%;
    height: auto;
}

.site-footer {
    border-top: 1px solid var(--line);
    background: #131819;
}

.site-footer__inner {
    display: grid;
    gap: 1.75rem;
    padding-block: 2.1rem 0;
}

.brand--footer {
    margin-bottom: .75rem;
}

.brand--footer .brand__image {
    height: 3.25rem;
    max-width: 15.5rem;
}

.brand__icon {
    display: block;
    width: 5.25rem;
    aspect-ratio: 1;
    background:
        linear-gradient(
            135deg,
            var(--brand-icon-a, var(--hive-gold)),
            var(--brand-icon-b, var(--strategic-teal)),
            var(--brand-icon-c, var(--neural-indigo)),
            var(--brand-icon-d, var(--architectural-white)),
            var(--brand-icon-a, var(--hive-gold))
        );
    background-size: 340% 340%;
    -webkit-mask: url("../images/KypseraIcon.svg") center / contain no-repeat;
    mask: url("../images/KypseraIcon.svg") center / contain no-repeat;
    filter: drop-shadow(0 14px 32px rgba(214, 168, 79, .16));
    animation: brand-icon-flow 14s ease-in-out infinite;
    transition: filter .25s ease, transform .25s ease;
}

.brand--icon {
    --brand-icon-a: var(--hive-gold);
    --brand-icon-b: var(--strategic-teal);
    --brand-icon-c: var(--neural-indigo);
    --brand-icon-d: var(--architectural-white);
}

.brand--icon:hover .brand__icon {
    filter: drop-shadow(0 18px 42px rgba(0, 140, 137, .22));
    transform: translateY(-2px) scale(1.03);
    animation-duration: 7s;
}

.brand--icon.is-anthracite {
    --brand-icon-a: var(--anthracite);
    --brand-icon-b: var(--hive-gold);
    --brand-icon-c: var(--strategic-teal);
    --brand-icon-d: var(--architectural-white);
}

.brand--icon.is-gold {
    --brand-icon-a: var(--hive-gold);
    --brand-icon-b: var(--architectural-white);
    --brand-icon-c: var(--strategic-teal);
    --brand-icon-d: var(--hive-gold);
}

.brand--icon.is-teal {
    --brand-icon-a: var(--strategic-teal);
    --brand-icon-b: var(--hive-gold);
    --brand-icon-c: var(--neural-indigo);
    --brand-icon-d: var(--architectural-white);
}

.brand--icon.is-indigo {
    --brand-icon-a: var(--neural-indigo);
    --brand-icon-b: var(--strategic-teal);
    --brand-icon-c: var(--hive-gold);
    --brand-icon-d: var(--architectural-white);
}

.brand--icon.is-white {
    --brand-icon-a: var(--architectural-white);
    --brand-icon-b: var(--hive-gold);
    --brand-icon-c: var(--strategic-teal);
    --brand-icon-d: var(--architectural-white);
}

@keyframes brand-icon-flow {
    0% { background-position: 0% 50%; }
    35% { background-position: 78% 18%; }
    70% { background-position: 100% 82%; }
    100% { background-position: 0% 50%; }
}

.site-footer__brand {
    max-width: 560px;
}

.site-footer__brand p {
    margin-bottom: 0;
}

.footer-bottom {
    display: flex;
    min-height: 4.25rem;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-top: 1px solid var(--line);
    color: rgba(244, 242, 234, .58);
    font-size: .88rem;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: .35rem 1rem;
}

.footer-copy {
    color: rgba(244, 242, 234, .58);
    order: 1;
}

.footer-bottom .footer-nav {
    order: 2;
}

.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 70;
    display: grid;
    width: 2.9rem;
    height: 2.9rem;
    place-items: center;
    color: var(--ink);
    background: var(--hive-gold);
    border: 1px solid rgba(214, 168, 79, .7);
    box-shadow: 0 16px 42px rgba(0, 0, 0, .28);
    cursor: pointer;
    opacity: 0;
    transform: translateY(.8rem);
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease, background .2s ease;
}

.back-to-top.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    background: var(--architectural-white);
}

.back-to-top span {
    width: .72rem;
    height: .72rem;
    border-top: 2px solid currentColor;
    border-left: 2px solid currentColor;
    transform: translateY(.18rem) rotate(45deg);
}

.flashmessage {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 80;
    width: calc(100vw - 2rem);
    max-width: 380px;
    padding: 1rem;
    color: var(--ink);
    background: var(--architectural-white);
}

.reveal {
    opacity: 1;
    transform: none;
    transition: opacity .7s ease, transform .7s ease;
}

.reveal-enabled .reveal {
    opacity: 0;
    transform: translateY(18px);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 980px) {
    :root {
        --header-expanded-height: 86px;
        --header-compact-height: 68px;
    }

    .site-header__inner {
        grid-template-columns: auto 1fr auto;
        gap: .75rem;
    }

    .nav-toggle {
        display: inline-flex;
        grid-column: 3;
        grid-row: 1;
    }

    .site-nav {
        position: fixed;
        inset: var(--header-expanded-height) 0 auto;
        display: grid;
        justify-content: stretch;
        gap: 0;
        padding: .65rem var(--container-gutter) 1rem;
        border-bottom: 1px solid var(--line);
        background: rgba(23, 29, 30, .98);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform .24s ease, opacity .24s ease;
    }

    .site-header.is-scrolled .site-nav {
        inset: var(--header-compact-height) 0 auto;
    }

    .is-nav-open .site-nav {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .is-nav-open .nav-toggle__line {
        background: transparent;
    }

    .is-nav-open .nav-toggle__line::before {
        transform: translateY(.38rem) rotate(45deg);
    }

    .is-nav-open .nav-toggle__line::after {
        transform: translateY(-.38rem) rotate(-45deg);
    }

    .site-nav a {
        padding: 1rem 0;
        border-bottom: 1px solid var(--line);
        min-height: 0;
        font-size: 1rem;
    }

    .header-cta {
        display: none;
    }

    .header-actions {
        grid-column: 2;
        grid-row: 1;
        justify-self: end;
    }

    .language-switch {
        gap: .42rem;
        font-size: .6rem;
    }

    .hero {
        padding: 4rem 0 3.25rem;
    }

    .hero__inner,
    .section-heading,
    .concept-layout,
    .approach-layout,
    .about-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .hero__inner {
        gap: 2.4rem;
    }

    .hero__visual {
        top: 1rem;
        right: -8rem;
        width: 82vw;
        min-width: 560px;
        max-width: 680px;
        opacity: .52;
    }

    .hero-pillars {
        margin-top: .5rem;
    }

    .section-heading {
        gap: 1.25rem;
    }

    .section-heading .text-link {
        justify-self: start;
    }

    .tile-grid--3,
    .tile-grid--articles {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .tile-grid--3,
    .tile-grid--articles {
        grid-template-columns: 1fr;
    }

    .pillar,
    .insight-card {
        min-height: 0;
    }

    .concept-pairs {
        grid-template-columns: 1fr;
    }

    .contact-cells {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        --container-gutter: 1rem;
    }

    .site-header__inner,
    .site-footer__inner,
    .section__inner,
    .hero__inner,
    .page-hero__inner {
        padding-inline: 1rem;
    }

    .site-header {
        background: rgba(23, 29, 30, .94);
    }

    .nav-toggle__label {
        display: none;
    }

    .nav-toggle {
        min-width: 2.55rem;
        min-height: 2.35rem;
        padding: .55rem .65rem;
    }

    .language-switch {
        min-height: 2.35rem;
    }

    .brand__image {
        height: 2.6rem;
        max-width: 11.2rem;
    }

    .brand__logo {
        width: 11.2rem;
        height: 2.6rem;
    }

    .site-header.is-scrolled .brand__logo,
    .site-header.is-scrolled .brand__image {
        height: 2.25rem;
        max-width: 10rem;
    }

    .site-header.is-scrolled .brand__logo {
        width: 10rem;
    }

    .brand__icon {
        width: 4.25rem;
    }

    .hero {
        padding: 3rem 0 2.75rem;
    }

    .hero__grid {
        background-size: 42px 42px;
        opacity: .36;
    }

    h1 {
        max-width: 8ch;
        margin-bottom: 1.35rem;
        font-size: 3.6rem;
        line-height: .94;
    }

    .hero__lead {
        font-size: 1rem;
        line-height: 1.55;
    }

    .hero__actions {
        gap: .65rem;
        margin-top: 1.6rem;
    }

    .hero__visual {
        top: 2.2rem;
        right: -13.5rem;
        width: 38rem;
        min-width: 38rem;
        opacity: .34;
    }

    .node-grid {
        max-height: none;
    }

    .hero-pillars {
        border-top: 0;
    }

    .hero-pillars__item {
        display: grid;
        grid-template-columns: 3.2rem minmax(0, 1fr);
        align-items: baseline;
        gap: .75rem;
        padding: .85rem 1rem;
        border-top: 1px solid var(--line);
    }

    .hero-pillars strong {
        margin-top: 0;
        font-size: 1.08rem;
    }

    .section {
        padding: 3.5rem 0;
        scroll-margin-top: 74px;
    }

    .page-hero {
        padding: 4rem 0 2.6rem;
    }

    .page-hero h1,
    .section-heading h2,
    .section-title h2 {
        max-width: 100%;
        font-size: 2.35rem;
        line-height: 1.04;
    }

    .section-heading,
    .concept-layout,
    .approach-layout,
    .about-layout,
    .contact-layout {
        gap: 1.4rem;
    }

    .eyebrow {
        margin-bottom: 1rem;
        font-size: .66rem;
        letter-spacing: .18em;
    }

    .eyebrow::before {
        width: 1.55rem;
    }

    .hairline {
        margin: 1.5rem 0;
    }

    .hero-pillars,
    .tile-grid--3,
    .tile-grid--articles,
    .concept-pairs,
    .stat-grid,
    .contact-cells {
        grid-template-columns: 1fr;
    }

    .button {
        width: 100%;
        min-height: 2.8rem;
        padding: .8rem .9rem;
        font-size: .68rem;
        letter-spacing: .13em;
    }

    .pillar,
    .insight-card {
        gap: 1.1rem;
        padding: 1.15rem;
    }

    .pillar header,
    .insight-card header {
        display: grid;
        gap: .35rem;
        justify-content: start;
    }

    .pillar h3,
    .insight-card h3,
    .method-list h3 {
        font-size: 1.45rem;
    }

    .pillar dd,
    .method-list p,
    .insight-card p,
    .concept-pairs li,
    .about-copy p {
        font-size: .95rem;
        line-height: 1.55;
    }

    .method-list li {
        grid-template-columns: 1fr;
        gap: .75rem;
        padding: 1.15rem 0;
        background: transparent;
        border-top: 1px solid var(--line);
    }

    .method-list {
        gap: 0;
        background: transparent;
    }

    .stat-grid {
        gap: 0;
        margin-top: 1.6rem;
    }

    .stat-grid__item {
        display: grid;
        grid-template-columns: 3rem minmax(0, 1fr);
        align-items: baseline;
        gap: 1rem;
        padding: .9rem 1rem;
    }

    .stat-grid dt {
        font-size: 2rem;
    }

    .contact-panel > a,
    .contact-cells > div {
        padding: 1.15rem;
    }

    .contact-panel strong {
        font-size: 1.35rem;
    }

    .footer-bottom {
        display: grid;
        grid-template-areas:
            "nav"
            "copy";
        justify-content: stretch;
        padding-block: 1rem;
    }

    .site-footer__inner {
        gap: 1.25rem;
        padding-block: 1.6rem 0;
    }

    .footer-copy {
        grid-area: copy;
    }

    .footer-bottom .footer-nav {
        grid-area: nav;
    }

    .footer-nav {
        justify-content: flex-start;
        gap: .6rem 1rem;
    }

    .back-to-top {
        right: 1rem;
        bottom: 1rem;
        width: 2.65rem;
        height: 2.65rem;
    }
}

@media (max-width: 380px) {
    .brand__image {
        height: 2.25rem;
        max-width: 9.4rem;
    }

    .brand__logo {
        width: 9.4rem;
        height: 2.25rem;
    }

    .site-header.is-scrolled .brand__logo,
    .site-header.is-scrolled .brand__image {
        height: 1.9rem;
        max-width: 8.4rem;
    }

    .site-header.is-scrolled .brand__logo {
        width: 8.4rem;
    }

    .brand__icon {
        width: 3.5rem;
    }

    h1 {
        font-size: 3.15rem;
    }

    .page-hero h1,
    .section-heading h2,
    .section-title h2 {
        font-size: 2.05rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}